Hapuna and Spencer Beach Parks offer calm waters (1-2 ft surf). Avoid Hilo Bay/Hamakua Coast due to brown water advisory. Volcanic ash may reduce visibility near Kīlauea.
The Big Island's west shore remains the safest bet for swimming today, with small surf (1-2 ft) and lifeguards at Hapuna and Spencer Beach Parks. A **brown water advisory** is still active for Hilo Bay and the Hamakua Coast-avoid these areas. Volcanic ash from Kīlauea's eruption may affect air quality and water clarity near the eruption zone. Pack sun protection, check advisories before heading out, and respect wildlife (especially monk seals).
Currently posted advisories from the Hawaii Department of Health affecting Big Island. Source: official DOH Clean Water Branch.
Posted Apr 30, 2026 · Hilo bay and along the Hamakua Coast
Full advisory at health.hawaii.gov →Posted Apr 2, 2026 · Ninole area
Full advisory at health.hawaii.gov →Big Island · Best window: midday
high confidenceBig Island · Best window: morning
high confidenceBig Island · Best window: afternoon
medium confidenceBig Island · Best window: morning
medium confidenceBig Island · Best window: morning
medium confidenceStick to west-facing beaches like Hapuna or Spencer-calm, lifeguarded waters are safest. Avoid Hilo Bay, Hamakua Coast, and areas near Kīlauea due to advisories. Pack sun protection and check DOH/NWS updates before entering.
Hapuna and Spencer Beach Parks are your best bets-shallow, calm waters and lifeguards. Supervise kids closely, even in sheltered areas. Bring snacks and plan indoor backups (e.g., Imiloa Astronomy Center) if conditions change.
Carlsmith and Richardson offer decent snorkeling, but avoid Hilo Bay and Hamakua Coast due to brown water advisory. Monitor air quality near Kīlauea for volcanic ash. Windward shores may have stronger currents-stick to west-facing beaches.
West-facing beaches (Hapuna, Spencer) offer the calmest conditions today, with small surf (1-2 ft) and clear waters. A **brown water advisory** remains active for Hilo Bay and the Hamakua Coast-avoid swimming in these areas. Light to moderate winds (3-7 mph) prevail, with Hapuna experiencing slightly breezier conditions (NE winds). No active surf advisories, but volcanic ash may reduce water clarity near Kīlauea's eruption zone. Avoid murky or discolored water, especially near river mouths.
The Big Island's west shore is partly cloudy with patchy rain nearby today, with temperatures around 70-71°F. Hapuna Beach Park reports patchy rain and light NE winds (7.2 mph). Kahaluʻu Beach Park has a 100% chance of patchy rain and light WSW winds (3.4 mph). Volcanic ash advisories are in effect for areas north/northwest of Halemaʻumaʻu-check NWS updates if sensitive to ash. Gusty easterly winds (up to 22 mph) may affect air quality near the eruption zone.
A **brown water advisory** remains in effect for Hilo Bay and the Hamakua Coast-avoid swimming in these areas. Kīlauea's 46th eruption of 2026 has triggered an **ashfall advisory** for areas north/northwest of Halemaʻumaʻu, which may affect air quality and coastal zones. The University of Hawaii men's volleyball team won the NCAA National Championship-congrats to the Rainbow Warriors! Hurricane season starts soon (May 15 for Eastern Pacific)-monitor forecasts for potential impacts.
Sources
Disclaimer: This update is generated using AI and automated data sources including weather APIs, surf forecasts, and news feeds. It is not professional safety advice. Ocean conditions change rapidly and may differ from what is described here. Always check with on-site lifeguards, observe posted warning signs, and consult official sources such as the National Weather Service before entering the water. HawaiiYeah assumes no liability for injury, loss, or damage arising from use of this information. See our full disclaimer.